One possible scenario in the 'Kushina Alive Teaches Naruto' fanfiction is that Kushina teaches Naruto how to better control the Nine - Tails' chakra. Since she was the original Jinchuriki of the Nine - Tails, she has a deep understanding of its power. She could guide Naruto in using the chakra more efficiently and without the negative side effects that he often faced. This would be a huge boost to Naruto's abilities and his overall development as a ninja.
Naruto would gain more confidence. With Kushina by his side, teaching him and giving him support, he would feel more secure in his abilities. He would know that he has his mother, a strong ninja in her own right, guiding him.
Well, in such a fanfiction, Kushina being alive could lead to a different dynamic in the village. She might be actively involved in the politics of Konoha. Also, she could use her sealing jutsu knowledge to create new defenses for the village. And Naruto would have a mother figure around, which would influence his relationships with others, like how he views family and friends.
In this kind of fanfiction, Naruto might experience a very emotional moment. He could finally get to know his mother better. Kushina would probably embrace Naruto tightly, telling him how much she has missed him all these years. Maybe she would share some of the Uzumaki clan's secrets with him that no one else knew.
One possibility in such a fanfiction scenario is that Kushina's own chakra, which was already special as an Uzumaki, could have an impact on Naruto while he's sealed within her. It could either strengthen him in some ways or cause unforeseen consequences. Also, characters like Minato would have a different relationship with the situation. Instead of seeing Naruto as his son on the outside, he might be more focused on the presence of Naruto within Kushina, which could change how he approaches protecting his family and the village.
In this fanfiction, Naruto might finally get the motherly love he always craved. Kushina could share her unfulfilled dreams for Naruto, like seeing him grow up without the pain of being an orphan. They would probably have an emotional conversation about Naruto's father too.
If Kushina were alive in Naruto fanfiction, it could change the story in many ways. For one, Naruto would grow up with a mother figure. He might not have faced so much loneliness and discrimination in the village as Kushina could have protected him. Also, Kushina was a powerful kunoichi. She could have trained Naruto herself, perhaps passing on unique Uzumaki techniques earlier. This could have made Naruto even stronger, more quickly.
If Kushina was alive in a fanfiction, Naruto's relationship with his father, Minato, would be different. They could all be a proper family, and Naruto would grow up with both his parents. His relationship with his friends might also change as he would have a more stable home life. For example, he might be more confident around Sakura and Sasuke, and his bond with them could be less about seeking acceptance due to his lack of family.
It could start with Naruto being born and Minato and Kushina getting to raise him. They would teach him all about chakra control and ninjutsu. Naruto would be a happy kid growing up in a loving family environment.
In a fanfiction, if Minato were to slap Kushina, it would be a huge shock to the Naruto - Kushina relationship. It could potentially cause a rift between Naruto and his father Minato in Naruto's mind. Also, Kushina would likely be deeply hurt and angry, which might lead to her distancing herself from Minato. This event could also change the way Naruto views his family's past and his parents' relationship.
Well, if Naruto and Kushina left Konoha in fanfiction, it would change a great deal. Naruto would not have the same relationships with his friends like Sasuke and Sakura. He might develop different fighting styles as he wouldn't be trained by the same people in Konoha. Kushina, being a strong kunoichi, could train Naruto in her own unique ways. And their departure could also cause a stir in Konoha, with some people trying to find them and others realizing the mistakes they made in how they treated Naruto and his family in the past.